Stefanie swam four-fifths of a lap in the morning and seven-fifteenths of a lap in the evening. What fraction of a lap did Stefanie swim the entire day?

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?